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Adaptive acquisition of multiple access codes

  • US 4,538,281 A
  • Filed: 05/06/1982
  • Issued: 08/27/1985
  • Est. Priority Date: 05/06/1982
  • Status: Expired due to Term
First Claim
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1. A signal measuring technique comprising:

  • providing first and second signals;

    measuring the correlation between said first and second signals at different phases of one of said signals;

    comparing said measured correlations to first and second threshold signals and providing an output when said measured correlation exceeds said first or second threshold signals;

    modifying each threshold signal when a measured correlation exceeds said second threshold signal; and

    adjusting the phase of said one of said signals to that phase corresponding to the most recent output.

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